【摘要】 考虑捕食者无密度制约、无捕捞,而食饵具有非线性密度制约和常投放率的一类功能性反应的食饵捕食系统,对其进行了定性分析,证明了在不稳定的正平衡点附近存在唯一的极限环。更多还原

【Abstract】 Considering a predator-prey system with a kind functional reaction in which the predator species have no density restriction,no fishing,while the prey species have nonlinear density restriction and the constant invest.The qualitative analysis is made of it and proved that there exists unique limit cycle near the positive equilibrium point.更多还原